1.I________to my cousin’s birthday party last night，but I was not available. (2013·安徽，28)
A.went
B.had gone
C.would go
D.would have gone
答案：D
2.It ________be the vocabulary that caused you the problem in the exercise because you know a lot of words.(2013·安徽，34)
上海龙凤1314 shlf A.may B.couldn’t C.should D.needn’t
答案：B
上海龙凤1314 shlf 3.I should not have laughed if I________you were serious.(2013·江苏，30)
A.thought
B.would think
上海龙凤1314 shlf C.had thought
上海龙凤1314 shlf D.have thought
答案：C
上海龙凤1314 shlf 解析：考查虚拟语气。句意为：如果我当时想到你是认真的，我就不会笑了。由句意知，此句是与过去事实相反的虚拟语气，故从句结构为had done。
4.—Why are your eyes so red?You________have slept well last night.
上海龙凤1314 shlf —Yeah，I stayed up late writing a report.(2013·四川，5)
A.can’t
上海龙凤1314 shlf B.mustn’t
C.needn’t
D.won’t
答案：A
上海龙凤1314 shlf 5.My mom suggests that we ________ eat out for a change this weekend.(2013·陕西，12)
A.should
B.might
C.could
D.would
答案：A
解析：句意为：母亲提议这个周末出去吃饭换换口味。suggest(建议)接宾语从句时谓语动词用(should)do。
上海龙凤1314 shlf 6.Since nobody gave him any help，he ________ have done the research on his own.(2013·大纲全国，26)
A.can
B.must
C.would
D.need
答案：B
7.If we________a table earlier，we wouldn’t be standing here in a queue.(2013·北京，34)
A.have booked
B.booked
C.book
D.had booked
答案：D
上海龙凤1314 shlf 解析：考查虚拟语气。句意为：如果早些预订饭桌，我们现在就不会站在这儿排队了。if从句是对过去情况的假设，故用过去完成时态。
上海龙凤1314 shlf 8.—You needn’t take an umbrella.It isn’t going to rain.
—Well，I don’t know.It________do.(2013·北京，35)
A.might
B.need
C.would
D.should
答案：A
上海龙凤1314 shlf 解析：考查情态动词用法。句意为：——你不必带伞。天不会下雨。——我不知道，可能会下雨吧。might“可能”，表推测，且可能性较小。
上海龙凤1314 shlf 9.Harry is feeling uncomfortable.He________too much at the party last night.(2013·辽宁，31)
上海龙凤1314 shlf A.could drink
B.should drink
C.would have drunk
D.must have drunk
答案：D
10.No one________ be more generous;he has a heart of gold.(2013·天津，9)
A.could
B.must
C.dare
D.need
答案：A
上海龙凤1314 shlf 解析：考查情态动词。句意为：没人比他更慷慨;他有一颗金子般的心。“No one could be more generous”是否定词和比较级连用，表达最高级含义，A项could可以在否定句中表示推测，为正确答案。B项表推测，只用在肯定句中;dare和need不符合句意。